In the United States, Tax Day is a colloquial term for the day on which individual income tax returns are due to be submitted to the federal government. The term may also refer to the same day for individual states, even where the tax return due date is a different day.
Since 1955, for those living in the United States, Tax Day has typically fallen on April 15. For people who file a U.S. tax return and live outside the United States and Puerto Rico, Tax Day has typically fallen on June 15, because of the two-month automatic extension granted to filers by IRS Publication 54.
At least two local holidays in the United States sometimes coincide with Tax Day. First, Emancipation Day, a holiday in Washington, D.C. commemorating the emancipation in April 1862 of African slaves. It is observed on the weekday closest to April 16. Second, is Patriots' Day, a holiday in Maine and Massachusetts that celebrates the Battles of Lexington and Concord on April 19, 1776, that initiated the American Revolutionary War. It is now celebrated on the third Monday in April. For both Patriots' Day and Emancipation Day, special rules apply. For Emancipation Day, when April 15 falls on a Friday, tax returns are due the following Monday. For both Emancipation Day and Patriots' Day, when April 15 falls on a Saturday or Sunday, tax returns are due the following Tuesday.
Federal income tax was introduced with the Revenue Act of 1861 to help fund the Civil War, and subsequently repealed, re-adopted, and held unconstitutional. The early taxes were based on assessments, not voluntary tax returns. Tax payment dates varied by act.
The filing deadline for individuals was March 1 in 1913 (the first year of a federal income tax), and was changed to March 15 in 1918 and again to April 15 in 1955. Today, the filing deadline for U.S. federal income tax returns for individuals remains April 15 or, in the event that the 15th falls on a Saturday, Sunday or holiday, the first succeeding day that is not a Saturday, Sunday or holiday.[inconsistent]